避讳

taboo against using the personal names of emperors
one's elders
etc

毖, 臂膀, 壁报, 弊病, 必不可少, 必不可少组成, 壁橱, 避弹坑, 必得, 壁灯, 必定, 弊端, 避风, 避风处, 毕恭毕敬, 壁挂, 闭关政策, 闭关自守, 闭合, 壁虎, 壁画, 璧还, 闭会, 闭会祈祷, 哔叽, 壁架, 必将, 闭经, 毕竟, 壁龛, 避坑落井, 碧蓝, 避雷器, 壁垒, 壁垒森严, 壁立, 贲临, 壁炉, 秘鲁, 碧绿,